<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hello React</title>
</head>

<body>
    <!-- 0 根节点(容器节点) -->

    <!-- 1 导入React和ReactDOM这两个核心包 -->

    <script>
        // 2 创建React元素，一个h1标签包含“Hello React”文本

        // 3 渲染React元素到页面中去

    </script>

</body>

</html>